20
Measuring Groundwater Elevation
Et = Elevation at top of casing (given)
Dw = Depth to water (measured with water level indicator)
Ds = Depth of sensor submergence (from Aqua4Plus,
Real Time Monitor)
Off = Et - Dw - Ds = Offset (calculated) to be entered in
Aqua4Plus
Example:
Et = 500’
Dw = 47’
Ds = 38’
Off = Et - Dw - Ds = 500’ - 47’ - 38’ = 415’
To enter the offset, click on the Config Menu, and then select Field Calibration. (Be sure
the units in Aqua4Plus are the same as the units you used when measuring, above.)
Leave the ‘m’ value under Pressure unchanged.
For the ‘b’ value under Pressure, enter the offset calculated above, in this case 415.
Click OK. The PT2X will now display Pressure readings as depth to water.
D w
Ds
E t
Figure 10: Elevation
Measurements
Figure 11: Entering offset for Elevation readings
